The volume of literature attesting to the clinical benefits of exercise training in patients with stable chronic systolic heart failure is substantial. Exercise training can improve symptoms and exercise capacity, as well as reducing morbidity, mortality, and rates of emergency hospitalization associated with this condition. In this article, Dr. Coats reviews the modes and intensity of exercise training, selection of patients, duration of training effects, and discusses other clinical guidance for using this treatment option in patients with stable chronic systolic heart failure.